Electric water-heater.



J. B. BOOKMAN. ELECTRIC WATER-HEATER.

APPLICATION FILED JUNE 511916- Patented May 22, 1917.

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aosnrrr B. BooKMAn, or MANHATTAN, NEVADA.

ELECTRIC WATER-HEATER.

Specification of Letters Patent.

Patented May 22, 1917.

Application filed June 5, 1916. Serial No. 102,805;

. heater so constructed that cold water may be practicallyinstantaneously heated in a convenient, cheap and sanitary manner.

The primary object of my invention is to provide" a heater of the classdescribed in which the liquid contained'therein circu lates therethroughby gravity, the liquid entering at the top of the heater and beingwithdrawn at the bottom.

Another object of my invention is to provide safety means for operationwhen liquid is not being withdrawn from the tank.-

A further object of my invention is to provide a device of the characterdescribed which maybe quickly and easily disassembled for cleaning orrepair, consists of few parts, is compact, neat in appearance andcapable of quick and easy installation.

Other objects and advantages to be derived from the use of my improvedelectric liquid heater will appear from the following detaileddescription and the claims, taken with an inspection of the accompanyingdrawing, in which:

Figure 1 is a longitudinal sectional view of an electric heaterembodyingthe improvements of my invention on the line 11 of Fig. 2;

Fig. 2 is a transverse sectional view taken on the line 22 of Fig. 1;

Fig. 3 is an enlarged section taken on the line 33 of Fig. 2; and I Fig.4 is a longitudinal sectional view in plan of one of the circulatingtanks.

Referring more particularly to the drawing, wherein similar charactersof reference designate like and corresponding parts throughout thevarious views, 1 designates a liquid supply pipe which, when desired,may be connected to the water supply of a building, said conduit 1having a valve 2 interposed therein. A branch pipe 3 is provided havinga control valve 3 interposed therein for a purpose which willhereinafter appear.

The heater proper embodies a casing 4 substantially rectangular inconfiguration,

a plurality of electric heaters 5 being disposed in spaced relationwithin the casing, said heaters being controlled from the switch 6.

I provide a plurality of circulating units designated A, B, and G intheir entireties, each of said circulating units having reinforcingstrips 7 along the margins thereof. The detail structure of one of thecirculating units is best shown in Fig. 4, said unit having a pluralityof alternately arranged baffle partitions 8 therein between which theliquid is adapted to circulate, as indicated by the arrows. As bestshown in Fig. 1 the circulating units are arranged in zigzag relation sothat liquid entering at one end of a given unit will circulate throughthe unit and pass out through the opposite end. The pipe ,1 is connectedwith theuppermost circulating member C at'the point 9, short pipesections 10, 11, and 12 serving to connect said circulating units, thelowermost unit being connected with a valve generally designated 13 bymeans of a short pipe section 14. I

The branch pipe 3 extends beneath the casing 4 and is provided with asub-branch 15 in which a valve 16 'isinterposed. The valve 13 embodies acasing and a turning plug 17, said plug having a right-angular bore 17therein for communication with the conduit 14 and the outlet pipe 18.The valve is secured to the bottom of the casing 4 by means of bolts 19or the like.

A short pipe length 21 connects the conduit 3 with one side of the valve13 for a purpose which will hereinafter appear.

A liquid chamber 30 is mounted at one end of the casing 4, said chamberserving to cool that end of the casing and prevent burning or scorchingan object on which the same may be mounted. Inlet and outlet pipes 31and 32 communicate with said chamber. An outlet cook 33 serves as adrain for the chamber 30. Brackets 36 are mounted on the wall of thecasing 4 adjacent said chamber, said brackets serving to mount thedevice in any convenient position.

,The front sides ofthe circulating unit are removable, said sides beingretained in position by means of the screws 25.

In operation liquid is admitted to the circulating units by opening thevalve 2. Current is turned on and the heaters serve to raise thetemperature of the water con' tained in said circulating unit. Towithdraw the water the plug 17 is rotated until the bore thereofafi'ords communication between the conduit section 1% and the outletpipe 18. When the device is not in use as a heater the valve 13 isclosed and the valve 3 opened. This permits a circulation of the liquidin connection with the colder liquid from the supply pipe 1 therebypreventing overheating of the liquid contents of the units A, B, and C.This, of course, would only come into actual use in the event that theuser should neglect to turn off the electric heater or where it wasdesired to maintain the water heated for a certain period of time beforeusing.

From the above description taken in connection with the accompanyingdrawing, it is thought that a clear and comprehensive understanding ofthe construction, operation and advantages of my invention may be had,and while I have shown and described the device as embodying a specificstructure, I desire that it be understood that such changes may be madein said structure as do not depart from the spirit and scope of theinvention as claimed.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is

1. In a device of the class described, the

combination of a main casing, a plurality of communicating circulatorsin said casing, a supply conduit communicating with the first of saidcirculators, an outlet conduit, a double-way valve to connect saidoutlet conduit with an outlet pipe, said valve being adapted to connectsaid outlet conduit with said inlet conduit to shunt the liquid aroundsaid circulators.

2. In a device of the class described, the combination with a maincasing, an inlet conduit, an outlet conduit, and a branch conduit, avalve to control communication between said conduits, of a circulatorcomposed of a flat rectangular body having a plurality of alternatelyarranged partitions therein, the front wall of said body beingremovable, screw members for retaining in position angularly disposedmembers adapted to be assembled in series whereby liquid will flow fromone to the other of said members in its path of travel during theheating process.

3. In a device of the class described, the combination of a casinghaving a plurality of relatively angularly disposed circulating devicestherein, said circulating devices being in communication with a sourceof liquid supply, a branch pipe shunting the liquid around saidcirculators, a safety valve for controlling the outlet of liquid, saidsafety valve being adapted to connect the branch pipe with the outletportions of said circulators whereby when no liquid is being withdrawnfrom the heater the same is caused to circulate in contact with thecolder liquid being supplied so as to prevent overheating.

JOSEPH B. BOOKMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, I). 0.

